Band length-adjustable hook-fixing type belt buckle

Abstract

A band length-adjustable hook-fixing type belt buckle according to the present disclosure comprises a band having a plurality of fixing holes formed in a surface thereof and configured to extend in a longitudinal direction; a pushing member provided at one end of the band and including a pushing portion fixing part extending in a width direction of the band and having a fitting groove perforated therein along the extension direction, a spring inserted into the fitting groove to give elasticity, and pushing portions provided at both ends of the fitting groove to be pushed from an inner side of the fitting groove to an outer side by means of the spring; and a buckle provided at the other end of the band and having a slide groove perforated therein and extending along the longitudinal direction so that the pushing portion slides therein.

1 . A band length-adjustable hook-fixing type belt buckle, comprising:
 a band having a plurality of fixing holes formed in a surface thereof and configured to extend in a longitudinal direction;   a pushing member provided at one end of the band and including a pushing portion fixing part extending in a width direction of the band and having a fitting groove perforated therein along the extension direction, a spring inserted into the fitting groove to give elasticity, and pushing portions provided at both ends of the fitting groove to be pushed from an inner side of the fitting groove to an outer side by means of the spring; and   a buckle provided at the other end of the band and having a slide groove perforated therein and extending along the longitudinal direction so that the pushing portion slides therein,   wherein the buckle includes a base portion having a hook fastened to the fixing hole, a pair of sidewall portions respectively formed upright at both widthwise sides of the base portion, and a cover portion supported by the pair of sidewall portions to form a band insert space between the cover portion and the base portion so that the band is inserted therein, wherein the slide groove extending along the longitudinal direction is formed at the sidewall portion,   wherein the sidewall portion has a plurality of protrusions protrusively extending at regular intervals along the longitudinal direction from a location of the slide groove toward a boundary of the base portion and the cover portion, and   wherein the pushing member includes a fixing projection protrusively extending with a width corresponding to the interval between the protrusions and inserted between the protrusions.   
     
     
         2 . The band length-adjustable hook-fixing type belt buckle according to  claim 1 ,
 wherein the belt buckle includes a band extension between the other end of the band and the buckle, the band extension including:   a pair of fixing portions configured to respectively contact an upper surface and a lower surface of the band and fixed to the band by means of a fastener; and   a pushing fixing portion configured to connect ends of the pair of fixing portions and form a placing space between the fixing portion and the other end of the band so that the pushing portion fixing part is inserted therein.   
     
     
         3 . The band length-adjustable hook-fixing type belt buckle according to  claim 1 ,
 wherein the buckle is configured to be divided into a first buckle piece located above and a second buckle piece located below based on the slide groove at the sidewall portion.   
     
     
         4 . The band length-adjustable hook-fixing type belt buckle according to  claim 3 ,
 wherein at surfaces where the sidewall portions of the first and second buckle pieces are in contact, first projections eccentrically protruding toward the band insert space and second projections eccentrically protruding opposite to the band insert space are provided such that any one of the first and second protrusions intersect with each other.   
     
     
         5 . The band length-adjustable hook-fixing type belt buckle according to  claim 1 ,
 wherein both ends of the slide groove are rounded.   
     
     
         6 . The band length-adjustable hook-fixing type belt buckle according to  claim 1 ,
 wherein the pushing portion includes:   a pillar inserted into the fitting groove to move by means of the spring; and   a head having a greater diameter than the pillar to protrude out of the fitting groove and having a recess part formed by recessing a part of an outer circumference thereof,   wherein the recess part is fitted into the slide groove to slide therein.   
     
     
         7 . The band length-adjustable hook-fixing type belt buckle according to  claim 6 ,
 wherein the base portion and the cover portion include pushing portion guides protrusively extending along the longitudinal direction at locations spaced apart from the sidewall portion inward by a predetermined interval, and   wherein the pushing portion fixing part further includes an extension fixing part fitted into a space between the pushing portion guides.   
     
     
         8 . The band length-adjustable hook-fixing type belt buckle according to  claim 7 ,
 wherein the pushing portion guide has a tapered inclined section provided at an inlet end thereof at which the pushing member is inserted into the buckle, and   wherein the pushing portion fixing part has a guide section formed by recessing a part thereof, which contacts the inclined section, inward.   
     
     
         9 . The band length-adjustable hook-fixing type belt buckle according to  claim 6 ,
 wherein the pillar is classified into first, second and third regions along the extension direction,   wherein the pillar includes:   a friction ring configured to surround an outer circumference of the first region; and   a stopper ring configured to surround an outer circumference of the third region.   
     
     
         10 . The band length-adjustable hook-fixing type belt buckle according to  claim 9 ,
 wherein the friction ring includes:   a first structure layer made of a flexible material;   a second structure layer stacked on the first structure layer and coated with a material having a greater friction coefficient than the other region of the pillar,   wherein the first structure layer presses the second structure layer so that the second structure layer comes into contact with an inner circumference of the fitting groove.   
     
     
         11 . The band length-adjustable hook-fixing type belt buckle according to  claim 9 ,
 wherein the stopper ring has a flat surface formed toward an inlet of the fitting groove, and   wherein a stopper projection is provided at a location spaced apart from the inlet of the fitting groove by a predetermined interval so that the flat surface of the stopper ring is caught by and fixed by the stopper projection.